| Year | Value | | 2022 | 369,361 | | 2021 | 350,717 | | 2020 | 333,329 | | 2019 | 315,992 | | 2018 | 299,461 | | 2017 | 283,802 | | 2016 | 269,001 | | 2015 | 255,221 | | 2014 | 242,817 | | 2013 | 231,784 | | 2012 | 221,706 | | 2011 | 212,240 | | 2010 | 203,139 | | 2009 | 195,416 | | 2008 | 188,565 | | 2007 | 180,923 | | 2006 | 173,077 | | 2005 | 166,078 | | 2004 | 160,069 | | 2003 | 155,081 | | 2002 | 151,103 | | 2001 | 147,156 | | 2000 | 142,414 | | 1999 | 137,148 | | 1998 | 131,748 | | 1997 | 126,251 | | 1996 | 121,058 | | 1995 | 116,434 | | 1994 | 112,370 | | 1993 | 108,991 | | 1992 | 106,049 | | 1991 | 102,838 | | 1990 | 99,011 | | 1989 | 94,585 | | 1988 | 89,414 | | 1987 | 83,923 | | 1986 | 79,132 | | 1985 | 75,647 | | 1984 | 73,454 | | 1983 | 72,594 | | 1982 | 72,443 | | 1981 | 71,522 | | 1980 | 68,954 | | 1979 | 64,830 | | 1978 | 59,173 | | 1977 | 52,562 | | 1976 | 46,702 | | 1975 | 42,657 | | 1974 | 40,256 | | 1973 | 39,412 | | 1972 | 39,767 | | 1971 | 40,040 | | 1970 | 39,374 | | 1969 | 37,843 | | 1968 | 35,537 | | 1967 | 32,688 | | 1966 | 30,306 | | 1965 | 28,942 | | 1964 | 28,533 | | 1963 | 29,159 | | 1962 | 30,588 | | 1961 | 31,926 | | 1960 | 32,636 |
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